The first product to be commercially treated by pasteurization was
A. wine
B. cheese
C. milk
D. beer
Answer: A
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A foreign molecule that causes a specific immune response is a(n) ________.
A. antigen B. antibody C. marker D. PAMP E. hapten
A wristwatch suddenly stops working. After replacing the battery, the watch starts working again. Which of the following statements correctly describes the situation from the perspective of the scientific method?
A. This proves that a dead battery was the reason the wristwatch stopped working. B. This substantiates the theory that all wristwatches require functional batteries. C. This is consistent with the hypothesis that a dead battery caused the wristwatch to stop working. D. This leads to the prediction that a battery is required for wristwatch operation.
In the accompanying figure, what is the function of the structure that is labeled as 7?
a. maintaining sperm below body temperature
b. storing of mature sperm
c. producing prostaglandins
d. producing nutritive fluid to support active sperm
e. producing alkaline fluid to protect sperm in the vagina
Cross-pollination occurs when pollen from an anther of one plant is transferred to the stigma of another plant of the same species.
a. true b. false